<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>ceshi</title>
</head>

<body>
    <div id="app">
        <img :title="introduce" v-if="age>=18" src="https://img0.baidu.com/it/u=1285092219,604874933&fm=253&fmt=auto&app=138&f=PNG?w=889&h=500" alt="">
    </div>
</body>
<script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
<script>
    var app = new Vue({
        el: "#app",
        data: {
            introduce: "bobi",
            age: 20
        }
    })
</script>

</html>